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require File.expand_path('../../spec_helper', __FILE__)
require File.expand_path('../../fixtures/class_variables', __FILE__)
describe "A class variable" do
it "can be accessed from a subclass" do
ClassVariablesSpec::ClassB.new.cvar_a.should == :cvar_a
end
it "is set in the superclass" do
a = ClassVariablesSpec::ClassA.new
b = ClassVariablesSpec::ClassB.new
b.cvar_a = :new_val
a.cvar_a.should == :new_val
end
end
describe "A class variable defined in a module" do
it "can be accessed from classes that extend the module" do
ClassVariablesSpec::ClassC.cvar_m.should == :value
end
it "is not defined in these classes" do
ClassVariablesSpec::ClassC.cvar_defined?.should be_false
end
it "is only updated in the module a method defined in the module is used" do
ClassVariablesSpec::ClassC.cvar_m = "new value"
ClassVariablesSpec::ClassC.cvar_m.should == "new value"
ClassVariablesSpec::ClassC.cvar_defined?.should be_false
end
it "is updated in the class when a Method defined in the class is used" do
ClassVariablesSpec::ClassC.cvar_c = "new value"
ClassVariablesSpec::ClassC.cvar_defined?.should be_true
end
it "can be accessed inside the class using the module methods" do
ClassVariablesSpec::ClassC.cvar_c = "new value"
ClassVariablesSpec::ClassC.cvar_m.should == "new value"
end
it "can be accessed from modules that extend the module" do
ClassVariablesSpec::ModuleO.cvar_n.should == :value
end
it "is defined in the extended module" do
ClassVariablesSpec::ModuleN.class_variable_defined?(:@@cvar_n).should be_true
end
it "is not defined in the extending module" do
ClassVariablesSpec::ModuleO.class_variable_defined?(:@@cvar_n).should be_false
end
end
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